CN215610118U - Platinum online trapping and recycling device - Google Patents

Abstract

The utility model relates to a platinum online trapping and recovering device which comprises a barrel, wherein one end of the barrel is sequentially provided with a gas outlet and a cone joint, the other end of the barrel is provided with a sealing head and a manhole, the bottom of the barrel is provided with a gas inlet, a temporary platform is arranged above the gas inlet, the small diameter of the cone joint is connected with the gas outlet, and the large diameter of the cone joint is connected with a support ring; the temporary platform is connected with the supporting plate, a slide way is arranged between the supporting ring and the supporting plate, and a filter element is arranged on the slide way. The device is used for recovering the lost platinum in the ammonia oxidation furnace, filtering and blocking some debris impurities so as to improve the operation effect of a subsequent compressor, reducing the impurities in the product, effectively improving the recovery rate of the platinum and saving the production cost of nitric acid. Meanwhile, the filter element filters impurities, and the influence on subsequent equipment and products is reduced.

Description

Platinum online trapping and recycling device

Technical Field

The utility model belongs to the field of filtration and recovery devices, and particularly relates to a platinum recovery device of a nitric acid system.

Background

At present, the mainstream process of nitric acid production at home and abroad is a double-pressurization technology, a platinum alloy catalyst is required in the production of a double-pressurization nitric acid device, ammonia gas and air fully react by taking platinum as the catalyst and then flow out of an oxidation furnace, nitric oxide erodes a platinum alloy net to form powder in the outflow process to be taken away, a large amount of platinum is lost due to long-time operation, a part of platinum is adsorbed on the inner walls of an ammonia reactor and a pipeline, and a part of platinum enters a production system and enters subsequent equipment and pipelines, so that the normal production operation of the system is influenced finally, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the platinum on-line trapping and recovering device which is arranged behind an ammonia oxidation furnace and an energy saver and is used for recovering and trapping platinum, so that the platinum recovery rate can be effectively improved, the nitric acid production cost is saved, and the influence on subsequent equipment and products is reduced.

The process gas is subjected to catalytic reaction in the ammoxidation furnace, partial heat is recovered by the energy saver to cool the process gas to about 260 ℃, the influence of the temperature on a subsequent trapping device is reduced, the process gas enters the online recovery trapping device to recover platinum lost in the ammoxidation furnace, and the platinum is filtered to block some debris impurities and the like. The recovery and trapping device realizes the on-line operation and the recovery of precious metals, and the recovery and trapping device and the production system are periodically overhauled and used together, and the collected platinum powder is processed and reused.

In order to achieve the purpose, the utility model adopts the following technical scheme: a platinum online capturing and recycling device comprises a barrel, wherein a conical section is arranged at one end of the barrel, one end, far away from the barrel, of the conical section is connected with a gas outlet, a sealing head is arranged at the other end of the conical section, the sealing head is connected with a manhole, a gas inlet is arranged at the bottom of the barrel, a temporary platform is arranged above the gas inlet, a support ring is arranged at one end, far away from the gas outlet, of the conical section, the temporary platform is connected with a support plate, a slide way is arranged between the support ring and the support plate, and a filter element is arranged on the slide way;

further, the small diameter of the conical section is connected with the air outlet, and the large diameter of the conical section is connected with the support ring;

further, the bottom of the cylinder body is also provided with a support;

furthermore, the support ring and the support plate are both arranged in parallel with the air outlet and are positioned in the cylinder body;

furthermore, 2-4 supports are arranged;

further, the filter element is made of basalt fiber felt; furthermore, the inner side and the outer side of the basalt fiber felt are supported and clamped by metal meshes;

further, the filter element is cylindrical and is provided with 22 filter elements;

furthermore, the inner metal net of the filter element is supported by a round steel ring and a rib plate;

further, a tail support ring is arranged in the support ring; furthermore, 20-24 tail support rings are arranged;

furthermore, a slide way is arranged between the support ring at the tail part of the filter element and the support plate, so that the filter element can be conveniently installed and taken out;

furthermore, the filter element is fixed between the support flange plate and the support plate by bolts;

furthermore, one side of the filter element is provided with a blocking plate, and the other side of the filter element is provided with a handle, so that the filter element is conveniently sent into the slide way, and the pollution of hands to the filter element is avoided;

furthermore, a through hole is formed in the filter element and used for pushing the filter element into place along the slide way;

furthermore, the filter element is provided with a circular ring and a support flange plate which are positioned at two ends of the filter element, the circular ring is close to the blocking plate, and the support flange plate is close to the handle; the ring supports and fixes one end of the filter element framework, sliding friction is generated between the ring and the slide way when the filter element is pushed in, and the ring is positioned in the support ring at the tail part of the filter element after the filter element is pushed in place;

further, the circular ring 14 and the support flange plate 22 are fixed on the filter element through short joints 15 and 21 respectively;

further, the platinum online trapping and recycling device is arranged behind the energy saver and is further arranged at the position where the upward pipeline bends to the horizontal pipeline.

One or more embodiments of the utility model achieve at least the following technical effects:

the utility model provides a platinum online trapping and recovering process technology and an application device, which are used for recovering lost platinum in an ammonia oxidation furnace, filtering and blocking some debris impurities to improve the operation effect of a subsequent compressor and reduce impurities in a product. The basalt fiber felt is replaced once in about 1 year, and the replaced fiber felt is used for extracting platinum, so that the recovery rate of the platinum can be effectively improved, and the production cost of nitric acid is saved. Meanwhile, the filter element filters impurities, and the influence on subsequent equipment and products is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural diagram of a platinum online trapping and recovering device in an embodiment of the utility model in a front view;

FIG. 2 is a schematic view of a filter cartridge according to an embodiment of the present invention;

FIG. 3 is a schematic view of a filter cartridge tail support in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a cartridge support plate according to an embodiment of the present invention;

FIG. 5 is a schematic side view of an online platinum collecting and recycling device according to an embodiment of the present invention.

In the figure: 1. an air outlet; 2. a taper section; 3. a support ring; 4. a filter element; 5. a support plate; 6. a barrel; 7. sealing the end; 8. a manhole; 9. a temporary platform; 10. an air inlet; 11. a slideway; 12. a support; 13. a blocking plate; 14. a circular ring; 15. a short section; 16. an outer metal mesh; 17. basalt fiber felt; 18. an inner metal mesh; 19. a circular steel ring; 20. a rib plate; 21. a short section; 22. supporting the flange plate; 23. a handle; 24. a support ring at the tail part of the filter element; 25. a filter element through hole; 26. and (4) bolts.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In a typical embodiment of the utility model, as shown in fig. 1-5, an online platinum capturing and recycling device comprises a cylinder 6, wherein one end of the cylinder 6 is provided with a cone joint 2, one end of the cone joint 2, which is far away from the cylinder, is connected with an air outlet 1, the other end of the cone joint is provided with an end enclosure 7, the end enclosure 7 is connected with a manhole 8, the bottom of the cylinder 6 is provided with an air inlet 10, a temporary platform 9 is arranged above the air inlet 10, one end of the cone joint 2, which is close to the cylinder, is provided with a support ring 3, and 22 tail support rings are arranged in the support ring 3; the small diameter of the conical section 2 is connected with the air outlet 1, and the large diameter is connected with the support ring 3; the temporary platform 9 is connected with the support plate 5, a slideway 11 is arranged between the filter element tail support ring 24 and the support plate 5, and 22 cylindrical filter elements 4 are arranged on the slideway 11; the filter element 4 is made of basalt fiber felts 17, the inner side 18 and the outer side 16 of the basalt fiber felts 17 are supported and clamped by metal nets, the inner metal net 18 of the filter element 4 is supported by round steel rings 19 and rib plates 20, and the filter element 4 is fixed between a support flange plate 22 and a support plate 5 by bolts 26; a blocking plate 13 is arranged on one side of the filter element 4, a handle 23 is arranged on the other side of the filter element 4, a through hole 25 is formed in the filter element 4, a circular ring 14 and a supporting flange plate 22 are arranged on the filter element 4 and are positioned at two ends of the filter element, the circular ring 14 is close to the blocking plate 13, and the supporting flange plate is close to the handle 23; the circular ring 14 and the support flange plate 22 are fixed on the filter element through short sections 15 and 21 respectively; the bottom of the cylinder body 6 is also provided with 2 supports 12; the support ring 3 and the support plate 5 are both arranged in parallel to the air outlet 1 and are positioned in the cylinder 6.

The working principle is as follows: a slideway 11 is arranged between the filter element tail supporting ring 24 and the supporting plate 5, which is convenient for the filter element to be installed and taken out. The catcher is provided with 22 cylindrical filter elements 4, the filter elements 4 are made of basalt fiber felts 17, the inner sides and the outer sides of the basalt fiber felts 17 are supported and clamped by metal nets, inner metal nets 18 of the filter elements are supported by round steel rings 19 and rib plates 20, and the filter elements 4 are fixed between a support flange plate 22 and a support plate 5 by bolts 26. After the maintainer got into at manhole 8 department, lay the air inlet 10 back of taking one's place with temporary platform 9, penetrate filter core 4 in the trap and push filter core 4 in filter core through-hole 25 department along slide 11 and put in place, support flange dish 22 adopts bolt 26 to be connected with backup pad 5, process gas is by air inlet 10, after filtering the absorption through filter core 4, the space between filter core afterbody support ring 24 and support ring 3 flows, gaseous along the taper 2 water conservancy diversion, send out through gas outlet 1, to follow-up equipment, after the filter core arrived the use period, the maintainer opened manhole 8 and taken out filter core 4, adsorb filterable platinum with the basalt fibrofelt and retrieve.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims (10)

1. The platinum online trapping and recycling device is characterized by comprising a barrel, wherein one end of the barrel is provided with a conical section, one end, far away from the barrel, of the conical section is connected with a gas outlet, the other end of the conical section is provided with a sealing head, the sealing head is connected with a manhole, the bottom of the barrel is provided with a gas inlet, a temporary platform is arranged above the gas inlet, the small diameter of the conical section is connected with the gas outlet, and the large diameter of the conical section is connected with a support ring; the temporary platform is connected with the supporting plate, a slide way is arranged between the supporting ring and the supporting plate, a filter element is arranged on the slide way, and the supporting ring and the supporting plate are all parallel to the air outlet and are positioned in the barrel.

2. The platinum online trapping and recycling device as claimed in claim 1, wherein a support is further arranged at the bottom of the cylinder.

3. The platinum online capturing and recycling device as claimed in claim 1, wherein the filter element is made of basalt fiber felt.

4. The platinum on-line capturing and recycling device as claimed in claim 3, wherein the inside and the outside of the basalt fiber felt are supported and clamped by metal meshes.

5. The platinum online trapping and recovering device according to claim 3, wherein the inner metal mesh of the filter element is supported by a round steel ring and a rib plate.

6. The platinum on-line trapping and recovering device as claimed in claim 2, wherein said support is provided with 2-4.

7. The platinum online trapping and recovering device as claimed in claim 1, wherein the filter element is fixed between the support flange plate and the support plate by bolts.

8. The platinum online trapping and recovering device as claimed in claim 1, wherein a blocking plate is arranged on one side of the filter element, and a handle is arranged on the other side of the filter element.

9. The platinum online capturing and recycling device as claimed in claim 1, wherein a tail support ring is arranged in the support ring.

10. The platinum on-line trapping and recovering device according to claim 9, wherein the tail support ring is provided with 20-24.

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